在响应式网站上检测移动设备的最大视频分辨率支持 [英] Detect max video resolution support for a mobile device on responsive website

问题描述

正如标题所说，我正在寻找跨浏览器和大多数跨平台的解决方案，用于显示不同大小分辨率的 。我的主要问题是，如果从标准/低清设备访问高分辨率视频，它将无法播放，因为原生视频应用程序无法处理它;对于具有标准或低显示分辨率的旧/低预算Android设备，这种情况最为正确。

As the title says, I'm searching for cross-browser and mostly cross-platform solution for displaying html5 videos of different size resolutions. My main issue is that if a high resolution video is accessed from a standard/low definition device, it will not be played as the native video application can't handle it; this is mostly true on older/low-budget android devices, which have a standard or low display resolution.

我最好的猜测是根据以下内容过滤视频源文件设备宽度mediaquery，类似，如果宽度< 480 - >使用低分辨率视频但这可能会排除有能力的高端设备，如iphone，galaxyS2 +等等。

My best guess was to filter the video source file based on the device width mediaquery, with something like if width < 480 --> use low-res video but this will probably exclude capable high end devices like iphones, galaxyS2+, and so on..

最后我问是否有什么要查询，如最大视频分辨率支持或类似。我知道Android API中有一些东西，但我不知道它是否可以在这种情况下使用..

In the end I'm asking if there is something to query like "max video resolution support" or similar. I know there is something in the Android API, but I don't know if it can be used in this situation..

在我发现的一些链接下面我可以参考：

Below some links I've found for reference:

http：/ /www.genuitec.com/mobile/docs/encodingVideo/encodingVideo.html
http://developer.android.com/guide/appendix/media-formats.html#recommendations
http://developer.android.com/reference/android/media/CamcorderProfile.html

推荐答案

根据这篇文章，Android建议使用CamcorderProfile：
http://developer.android.com/指南/附录/ media-formats.html＃推荐

Android suggests to use CamcorderProfile for this according to this article: http://developer.android.com/guide/appendix/media-formats.html#recommendations

他们说：

[...]设备的可用视频录制配置文件可用作媒体播放功能的代理。这些配置文件可以使用CamcorderProfile类进行检查，该类自API级别8开始可用。

[...] a device's available video recording profiles can be used as a proxy for media playback capabilities. These profiles can be inspected using the CamcorderProfile class, which is available since API level 8.

我现在也使用CamcorderProfile如下检测最大视频宽度和高度：

I am now also using CamcorderProfile now as follows to detect maximum video width and height:

  CamcorderProfile profile = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);
    Log.d(TAG, "Max Width: " + profile.videoFrameWidth);
    Log.d(TAG, "Max Height: " + profile.videoFrameHeight);

起初我不认为这是一个很好的解决方案，因为某些设备需要获得在Android Manifest中使用相机权限的权限（对我来说这是HTC Evo 3D）：

At first I don't think this is a good solution because some devices need a permission to use the camera permission for this in the Android Manifest (for me this was the HTC Evo 3D):

< uses-permission android：name =android.permission.CAMERA/>

不幸的是我也认识到它无法正常工作，因为对于我的Nexus S，它说最大分辨率为480x720像素，但我能够播放来自 http://source.android.com/compatibility/downloads.html#cts-media-files
因此，zip档案中的文件夹和文件名为：
android-cts-media-1.0\bbb_short\1280x720\mp4_libx264_libfaac\bbb_short.ffmpeg.1280x720.mp4.libx264_1750kbps_30fps.libfaac_stereo_192kbps_48000Hz.mp4

Unfortunately I also recognized that it does not work properly because for my Nexus S it says that the maxmium resolution would be 480x720 pixels but I was able to play a 1280x720 video from http://source.android.com/compatibility/downloads.html#cts-media-files More accordingly the folder and filename within the zip archive was: android-cts-media-1.0\bbb_short\1280x720\mp4_libx264_libfaac\bbb_short.ffmpeg.1280x720.mp4.libx264_1750kbps_30fps.libfaac_stereo_192kbps_48000Hz.mp4

这可能是这个方法帮助你。

Possibly this method helps you.

但我会感激任何其他方法更合适！有没有人知道另一种方式？

But I would appreciate any other method that fits better! Does anyone know another way?

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